Used Mercedes Benz G 65 AMG 2015 Automatic

The two G-Class models are defined by their powertrains. The G550 sports Mercedes' widely used, smoothly stalwart 388-horsepower V-8 engine with 391 pound-feet of torque, coupled to a seven-speed automatic with a high degree of manual gear control. It's a well-sorted drivetrain, smooth in highway driving and docile until it's not. In the 5,600-pound G550, the normally aspirated V-8 and automatic combine for acceleration to 60 mph of 6.0 seconds; it'll reach a limited top speed of 130 mph, but it struggles to achieve a 12/15 mpg fuel economy rating. The G63 AMG adds two turbochargers to the same engine for a net of 544 horsepower and 560 pound-feet of torque.

It uses a paddle-shifted version of the seven-speed automatic to punch new barn-door holes in the atmosphere. The muscular, rorty engine pounces to 60 mph in just 5.3 seconds, despite a curb weight over 5,700 pounds. Top speed is reined in to 130 mph. Gas mileage is just below the G550's, at 12/14 mpg; the G63 AMG has a stop/start function as standard equipment, which helps it beat the former supercharged G55's abysmal 11/13-mpg EPA ratings. Every G includes radar cruise control and blind-spot monitors. A rearview camera and parking sensors are standard, and are useful since visibility is constrained at the rear, where a wide frame surrounding the rear window blocks out most of the view.